45 results about "Binaural recording" patented technology

The invention relates to simulation of sound fields in enclosures, for instance for application in listening tests, where test subjects assess the sound quality or other sound perception characteristics of the sound field. According to a specific embodiment, the system comprises a binaural synthesis portion which synthesises sound for instance from a sound-reproduction equipment based on measured impulse responses of an actual room stored in a data base (31) and a binaural recording portion comprising a data base 32 for storing binaural recordings of other sound signals made in the room. Data from these databases are mixed (41) and reproduced by means of a headphone (39) provided with a head tracker (42) for tracking the movements of the listener's head. The invention furthermore comprises the use of cross-fading functions (36, 37) to enable the dynamic listening conditions, where the movements of the listener's head are taken into account during the simulation process.

A binaural-recording earphone set is provided. It comprises two speaker units and two microphone units, the two speaker units are inserted into the auditory canal of two ears respectively. The two microphone units are coupled on the two speaker units and can be dismounted. Under a recording mode, the microphone units can be dismounted from the speaker units, and replace the speaker units to be inserted into the auditory canal of the two ears to record external sound. Under a play mode, the speaker units are inserted back into the auditory canal of the two ears to playback the sound recorded previously.

The invention relates to simulation of sound fields in enclosures, for instance for application in listening tests, where test subjects assess the sound quality or other sound perception characteristics of the sound field. According to a specific embodiment, the system comprises a binaural synthesis portion which synthesizes sound for instance from a sound-reproduction equipment based on measured impulse responses of an actual room stored in a data base (31) and a binaural recording portion comprising a data base 32 for storing binaural recordings of other sound signals made in the room. Data from these databases are mixed (41) and reproduced by means of a headphone (39) provided with a head tracker (42) for tracking the movements of the listener's head. The invention furthermore comprises the use of cross-fading functions (36, 37) to enable the dynamic listening conditions, where the movements of the listener's head are taken into account during the simulation process.

An exemplary system for facilitating binaural hearing by a cochlear implant patient includes 1) a spectral analysis facility configured to divide a first audio signal presented to a first ear of the patient and a second audio signal presented to a second ear of the patient into first and second sets of analysis channels, respectively, and 2) a processing facility configured to process acoustic content contained in a first analysis channel included in the first set of analysis channels and acoustic content contained in a second analysis channel included in the second set of analysis channels, mix the processed acoustic content contained in the first and second analysis channels, and direct a cochlear implant to apply electrical stimulation representative of the mixed acoustic content to the first ear by way of a stimulation channel that corresponds to the first analysis channel.

A binaural sound reproduction apparatus includes a correction filter operable to filter an input sound signal that is recorded using a binaural recording microphone and to supply the filtered signal to a headphone, an adaptive filter to which the input sound signal is supplied, and a difference detector determining a difference between a sound signal that is obtained by collecting a sound reproduced by the headphone using a sound-collecting microphone that is the same as the binaural recording microphone, or that has a similar characteristic to that of the binaural recording microphone, and a sound signal output from the adaptive filter, and for transmitting the difference to the adaptive filter. The adaptive filter determines the inverse of a synthesis characteristic from the headphone to the sound-collecting microphone based on the input sound signal and the difference, and sets the determined characteristic as a characteristic of the correction filter.

A device for audio reproduction comprising a rest element for the head of a user, made of a deformable material; a right lateral support element and a left lateral support element located respectively at the two respective right and left of the rest element, the rest and left lateral support elements being connected to each other by the rest element, the right and left support elements defining between each other a listening space and a longitudinal direction parallel to the lateral support elements; a right loudspeaker and a left loudspeaker mounted respectively to the right and left lateral support elements have respective sound emission faces that face towards a listening space defined between the right and left support elements. The rest element provides a housing for a portion of the head configured to arrange the user with right and left ears oriented towards the right and left loudspeakers, the right and left ears creating a listening axis. The loudspeakers have each a woofer and a tweeter, the tweeters having an axis of symmetry oriented with a predetermined angle of elevation (α) with respect to the listening axis between a first elevation value (α) substantially equal to zero, where the tweeters have the axes of symmetry aligned to each other and parallel to the listening axis, and a second elevation value (α), substantially equal to 45°, where the tweeters have the axes of symmetry converging towards a point that is located higher than the listening axis. A system of binaural recording and a system for playing multi-dimensional effects are also included.

Synthetically generated signals are reproduced via a binaural hearing system, which includes two hearing devices. After reproducing a first signal via the first hearing device a reproduction of a second signal via the second hearing device is also carried out delayed by a defined time interval. The additional time delay is to be quantified such that the impression of a sound amplification is produced with a hearing system wearer.

The present invention proposes a method for operating a binaural hearing system with two hearing devices (1, 1′) operationally interconnected by means of a bidirectional link (8) which improves hearing perception in windy listening situations. The method comprises determining the level of wind noise present at each of the two hearing devices (1, 1′) and sending the audio signal picked-up at the first hearing device (1) to the second hearing device (1′) via the link (8) and then providing an output signal derived from the received signal to the electrical-to-mechanical output converter (3′) of the second hearing device (1′) if the level of wind noise at the second hearing device (1′) exceeds the level of wind noise at the first hearing device (1) by a pre-set threshold value. Furthermore, a binaural hearing system capable of performing such a method is given.

A wearable device for binaural audio is described. The wearable device includes a feedback mechanism, a microphone, an always on binaural recorder (AOBR), and a processor. The AOBR is to capture ambient noise via the microphone and interpret the ambient noise. An alert is issued by the processor to the feedback mechanism based on a notification detected via the microphone in the ambient noise.

An improved earphone which has stereophonic microphones and which is better suited for connection to such a multimedia device includes two ear units to be worn in or on the ear, which each include at least one sound generator and a microphone for binaural recording of ambient sound, a microphone unit which includes at least one further microphone, an operating unit which is connected via cable to the two ear units and the microphone unit, and a connection unit as interface, which is suitable for connecting the earphone to the multimedia device. For easy handling the earphone has at least two different function modes between which switching can take place both automatically and manually.

An improved earphone which has stereophonic microphones and which is better suited for connection to such a multimedia device includes two ear units to be worn in or on the ear, which each include at least one sound generator and a microphone for binaural recording of ambient sound, a microphone unit which includes at least one further microphone, an operating unit which is connected via cable to the two ear units and the microphone unit, and a connection unit as interface, which is suitable for connecting the earphone to the multimedia device. For easy handling the earphone has at least two different function modes between which switching can take place both automatically and manually.

A system for virtually rendering object-based audio by binaurally rendering each object and then translating the resulting stereo binaural signals between multiple crosstalk cancellation circuits feeding corresponding multiple speaker pairs is described. Example. Compared to prior art virtual rendering with a single pair of speakers, the described embodiments improve the listener's impression of space both inside and outside the sweet spot of the crosstalk canceller. An improved equalization technique for the crosstalk canceller is also described, calculated from both the crosstalk canceller filter and the binaural filter and applied to the monophonic audio signal being virtualized. The described technique improves timbre for listeners outside the sweet spot and results in less timbre shift when switching from standard to virtual rendering.

An exemplary system for facilitating binaural hearing by a cochlear implant patient includes 1) a spectral analysis facility configured to divide a first audio signal presented to a first ear of the patient and a second audio signal presented to a second ear of the patient into first and second sets of analysis channels, respectively, and 2) a processing facility configured to process acoustic content contained in a first analysis channel included in the first set of analysis channels and acoustic content contained in a second analysis channel included in the second set of analysis channels, mix the processed acoustic content contained in the first and second analysis channels, and direct a cochlear implant to apply electrical stimulation representative of the mixed acoustic content to the first ear by way of a stimulation channel that corresponds to the first analysis channel.

Disclosed is an audio signal processing device for performing binaural rendering on an input audio signal. The audio signal processing device includes a reception unit configured to receive the input audio signal, a binaural renderer configured to generate a 2-channel audio by performing binaural rendering on the input audio signal, and an output unit configured to output the 2-channel audio. The binaural renderer performs binaural rendering on the input audio signal based on a distance from a listener to a sound source corresponding to the input audio signal and a size of an object simulated by the sound source.